Effect of labetalol in hypertension during exercise and postural changes.

Abstract:

:1 Fourteen hypertensive patients were studied by intra-arterial BP monitoring to quantify the effects of standardized physiological stresses: Valsalva manoeuvre, isometric, treadmill and bicycle exercise, and 60 degree tilting before and after labetalol treatment. 2 The dose of labetalol ranged from 100--600 mg three times daily and the response was judged on outpatient clinic recordings. 3 The drug produced a sustained reduction of BP and heart rate responses during dynamic exercise and the Valsalva manoeuvre, but the degree of change from the lowered baseline were not changed by labetalol. The fall in BP on cessation of exercise was decreased rather than increased. 4 The response to controlled isometric muscle contraction was affected in a similar fashion. 5 Tilting produced a fall in BP after treatment, and this was most marked in those patients on the highest doses. However, compensatory increases in diastolic BP were observed.

journal_name

Br J Clin Pharmacol

authors

Balasubramanian V,Mann S,Millar-Craig MW,Raftery EB

subject

Has Abstract

pub_date

1979-01-01 00:00:00

pages

95S-100S

issue

Suppl 2

eissn

0306-5251

issn

1365-2125

journal_volume

8

pub_type

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